Published by Humanities Press; Sussex, Harvester Press, Atlantic Highlands, 1978
ISBN 10: 0391009044 ISBN 13: 9780391009042
Seller: Hackenberg Booksellers ABAA, El Cerrito, CA, U.S.A.
With an introduction by Isaiah Berlin. x, 404p., original blue cloth. Reprint of the 1966 New York edition.